MISC

2002年12月

Divergent expression and localization of aquaporin 5, an exocrine-type water channel, in the submandibular gland of Sprague-Dawley rats

PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
  • K Murdiastuti
  • ,
  • O Miki
  • ,
  • CJ Yao
  • ,
  • MN Parvin
  • ,
  • C Kosugi-Tanaka
  • ,
  • T Akamatsu
  • ,
  • N Kanamori
  • ,
  • K Hosoi

445
3
開始ページ
405
終了ページ
412
記述言語
英語
掲載種別
DOI
10.1007/s00424-002-0940-8
出版者・発行元
SPRINGER

By Western blot analysis, the expression level of aquaporin (AQP) 5 in the submandibular gland (SMG) was found to be different among individual rats of the Sprague-Dawley (SD) strain. Such differences were observed for AQP5 but not for AQP1 and consequently the SD strain was divided into two groups, one expressing a high level of AQP5 and the other a low one. The difference in average intensity of expression between the two groups was more than twofold. Immunohistochemical analysis of the SMG demonstrated that the AQP5 protein was localized in the basal and apical/lateral plasma membrane of acinar cells in rats expressing the high level of AQP5. In the rat expressing the low level, however, this channel protein was localized strongly in the apical/ lateral plasma membrane, but only very weakly in the basal membrane of the acinar cells. Such a diverse localization of AQP5 was confirmed by Western blotting as well. Breeding between brother and sister was repeated for two times within high expressers and low expressers to obtain the third generation progenies (172); the AQP5 level of the SMG in the third generation (F2 rats) from high expressers was significantly higher than the F2 from low expressers. Our present study suggests the existence of genetic variation in the expression of a water channel protein, AQP5, in rats.

Web of Science ® 被引用回数 : 27

リンク情報
DOI
https://doi.org/10.1007/s00424-002-0940-8
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000180583700014&DestApp=WOS_CPL
ID情報
  • DOI : 10.1007/s00424-002-0940-8
  • ISSN : 0031-6768
  • eISSN : 1432-2013
  • Web of Science ID : WOS:000180583700014

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